- Yvajuk z. s.
- Yachtclub Jinočany, z.s.
- YACHT CLUB CERE, z.s.
- YACHT CLUB MILEŠOV z.s.
- YC to Stella z.s.
- Youth4Ova, z.s.
- Youth For Christ Immanuel, z.s.
- Yes z.s.
- yFilm
- you connected, z.s.
- Yacht klub Jestřábí, z.s.
- YACHT club Jablonec n.Nisou
- Yoga Therapy Praha, z. s.
- YOUNG TALENTS, z. s.
- YMCA Ústí nad Labem
- Yacht Club Kozmice - občanské sdružení
- YACHTCLUB BANÍK OSTRAVA
- YMPAL- SPORT, o.s.
- YELLOW LINE z.s.
- Youth Business Network
- Yamka Minigolfclub Butovice, z. s.
- Yoshinkan Nové Město nad Metují, z.s.
- Yachtmeni, z.s.
- YACHT CLUB ORLÍK, z.s.
- YACHT CLUB Dvořiště - Lišov, z.s.
- Youth Europa Czechia z.s.
- Y. C. Zlín v likvidaci
- Youth and Environment Europe Czech Republic
- YMCA LIBEREC
- Yacht Club Řež z.s.
- Yacht Club ARCHER, z.s.
- Yellow Sisters z. s.
- YACHTCLUB PETROV z.s., v likvidaci
- YounGuns Brno, z.s.
- YETI RESCUE,z.s.
- Yettey v likvidaci
- Yacht Club Slezan Opava, z.s.
- Your Cooking Project, z.s.
- Youth Progress, z.s.
- Young snipers team, z.s. "v likvidaci"
- YERBABUENATEAM
- YOUR FREESTYLE ACADEMY z.s.
- Yacht Club PARS, z.s.
- Yacht Club DRAGON 77
- Yoga Experience Center, z.s.
- YEAH, z.s.
- YMCA Hradec Králové
- Yachting CZE, z.s.
- Youth for Youth, z.s.
- yeah-but-still z.s.